Results 11 to 20 of about 129,139 (258)

Hard Negative Examples are Hard, but Useful [PDF]

open access: yes, 2020
Triplet loss is an extremely common approach to distance metric learning. Representations of images from the same class are optimized to be mapped closer together in an embedding space than representations of images from different classes. Much work on triplet losses focuses on selecting the most useful triplets of images to consider, with strategies ...
Hong Xuan   +3 more
openaire   +2 more sources

Hard sets are hard to find

open access: yesProceedings. Thirteenth Annual IEEE Conference on Computational Complexity (Formerly: Structure in Complexity Theory Conference) (Cat. No.98CB36247), 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Buhrman, H.M., van Melkebeek, D.
openaire   +5 more sources

Soft-Tissue-Mimicking Using Hydrogels for the Development of Phantoms

open access: yesGels, 2022
With the currently available materials and technologies it is difficult to mimic the mechanical properties of soft living tissues. Additionally, another significant problem is the lack of information about the mechanical properties of these tissues ...
Aitor Tejo-Otero   +6 more
doaj   +1 more source

Backgammon Is Hard

open access: yes, 2021
We study the computational complexity of the popular board game backgammon. We show that deciding whether a player can win from a given board configuration is NP-Hard, PSPACE-Hard, and EXPTIME-Hard under different settings of known and unknown opponents' strategies and dice rolls. Our work answers an open question posed by Erik Demaine in 2001.
openaire   +2 more sources

INVESTIGATION OF PROPERTIES OF CURRENT COLLECTOR ELEMENTS AND THEIR EFFECT ON THE PERFORMANCE OF TRIBOSYSTEM «CONTACT WIRE - CURRENT COLLECTOR ELEMENT»

open access: yesNauka ta progres transportu, 2015
Purpose. The paper is devoted to the detailed analysis of interrelations at the contact point of friction pair «contact wire – current collector insert».
Yu. L. Bolshakov, A. V. Antonov
doaj   +1 more source

Utilizing Hydrothermal Processing to Align Structure and In Vitro Digestion Kinetics between Three Different Pulse Types

open access: yesFoods, 2022
Processing results in the transformation of pulses’ structural architecture. Consequently, digestion is anticipated to emerge from the combined effect of intrinsic (matrix-dependent) and extrinsic (processed-induced) factors.
Katharina Pälchen   +5 more
doaj   +1 more source

Bone Material Properties of Human Phalanges Using Vickers Indentation

open access: yesOrthopaedic Surgery, 2019
Objective To investigate the microhardness distribution throughout the human hand phalanges using the Vickers method, which can be used to directly evaluate the bone mechanical properties at tissue level and provide an alternative means to investigate ...
Bing Yin   +5 more
doaj   +1 more source

Degradation of polymer particle systems in agrocomplex

open access: yesResearch in Agricultural Engineering, 2013
One of the possibilities of recycling waste from blasting processes is the application of these secondary materials in polymeric matrix, where the primary material is replaced with the secondary one.
P. Valášek, M. Brožek
doaj   +1 more source

Effect of sedimentation on the final hardness of polymeric particle composites

open access: yesResearch in Agricultural Engineering, 2012
In present days composite materials are the indispensable part of many branches. They make a foray into the branch of agricultural production, where they are getting to intensive development of systems utilized e.g. at soil processing.
P. Valášek, M. Müller, A. Proshlyakov
doaj   +1 more source

Microstructural Evaluation of Inconel 718 and AISI 304L Dissimilar TIG Joints

open access: yesMetals, 2023
Dissimilar welding joints of Inconel 718 (IN718) nickel superalloy with low-carbon AISI 304L austenitic steel (SS304L) were conducted using the Tungsten Inert Gas (TIG) welding process. The present investigation focuses on the effect of different welding
Dimitra Ioannidou   +3 more
doaj   +1 more source

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